package com.sangeng.domain;

import com.alibaba.fastjson.annotation.JSONField;
import com.sangeng.entity.User;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Author 三更  B站： https://space.bilibili.com/663528522
 */
@Data
@NoArgsConstructor
public class LoginUser implements UserDetails {
    //用户信息
    private User user;

    //存储权限信息
    private List<String> permissions;

    //存储SpringSecurity所需要的权限信息的集合
    //@JSONField(serialize = false) 标识该属性与序列化无关,不会存储到redis中去
    @JSONField(serialize = false)
    private List<SimpleGrantedAuthority> authorities;

    public LoginUser(User user, List<String> permissions) {
        this.user = user;
        this.permissions = permissions;
    }

    /**
     * 返回用户对应权限信息
     * @return List<SimpleGrantedAuthority> 类型
     */
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        if (this.authorities != null && !this.authorities.isEmpty()) {
            return this.authorities;
        }

        //把permissions中字符串类型的权限信息转换成GrantedAuthority对象存入authorities中
        this.authorities = permissions.stream()
                        .map(SimpleGrantedAuthority::new)
                        .collect(Collectors.toList());

        return this.authorities;
    }

    @Override
    public String getPassword() {
        return user.getPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserName();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}
